To suppress production of a large amount of defective products and defective coating to a minimum possible extent by providing a means for detecting the amount of a positional deviation which compares the phase of each of fabricating rolls with a reference phase of the fabricating roll.
A material 1 is made to pass through transfer rolls 6, 11 as fabricating rolls by means of a feed conveyor 4 and a carrying conveyor 5. The actually measured number of pulse signals by a rotary encoder 21 from the point of time when a pulse signal S1 by an origin detection sensor 18 is turned ON (detecting an origin mark 17) upto the point of time when a pulse signal S2 by an origin detection sensor 20 is turned ON, is counted. Thus it is possible to determine the amount of deviation of an origin phase between the transfer rolls 6, 11 by comparing the number of pulses previously set at a control device 23 by the conveying velocity V of the carrying conveyor 5 and an intershaft distance between the transfer rolls 6,11 to the actual measurements. When the transfer phase to the material 1 is deviated beyond the tolerance, an abnormality alarm is sounded by an alarm device 24.
OGAWA KOJI
KUMO ICHIRO
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